[syzkaller] WARNING in mptcp_reset_timer #70
Comments
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Can't repro on top of 35d6b46 - let's wait a bit and then close it. |
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Still happens, on top of: c9bb76f ("DO-NOT-MERGE: mptcp: enabled by default") (tag: export/20200917T151806, mptcp_net-next/export) (4 days ago) |
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Still happens on top of: 2229aa4 ("DO-NOT-MERGE: mptcp: enabled by default") (HEAD, tag: export/20201015T052017, mptcp_net-next/export) (13 hours ago) |
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Can't repro anymore. Closing |
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The current implementation of L2CAP options negotiation will continue
the negotiation when a device responds with L2CAP_CONF_UNACCEPT ("unaccepted
options"), but not when the device replies with L2CAP_CONF_UNKNOWN ("unknown
options").
Trying to continue the negotiation without ERTM support will allow
Bluetooth-capable XBox One controllers (notably models 1708 and 1797)
to connect.
btmon before patch:
> ACL Data RX: Handle 256 flags 0x02 dlen 16 #64 [hci0] 59.182702
L2CAP: Connection Response (0x03) ident 2 len 8
Destination CID: 64
Source CID: 64
Result: Connection successful (0x0000)
Status: No further information available (0x0000)
< ACL Data TX: Handle 256 flags 0x00 dlen 23 #65 [hci0] 59.182744
L2CAP: Configure Request (0x04) ident 3 len 15
Destination CID: 64
Flags: 0x0000
Option: Retransmission and Flow Control (0x04) [mandatory]
Mode: Basic (0x00)
TX window size: 0
Max transmit: 0
Retransmission timeout: 0
Monitor timeout: 0
Maximum PDU size: 0
> ACL Data RX: Handle 256 flags 0x02 dlen 16 #66 [hci0] 59.183948
L2CAP: Configure Request (0x04) ident 1 len 8
Destination CID: 64
Flags: 0x0000
Option: Maximum Transmission Unit (0x01) [mandatory]
MTU: 1480
< ACL Data TX: Handle 256 flags 0x00 dlen 18 #67 [hci0] 59.183994
L2CAP: Configure Response (0x05) ident 1 len 10
Source CID: 64
Flags: 0x0000
Result: Success (0x0000)
Option: Maximum Transmission Unit (0x01) [mandatory]
MTU: 1480
> ACL Data RX: Handle 256 flags 0x02 dlen 15 #69 [hci0] 59.187676
L2CAP: Configure Response (0x05) ident 3 len 7
Source CID: 64
Flags: 0x0000
Result: Failure - unknown options (0x0003)
04 .
< ACL Data TX: Handle 256 flags 0x00 dlen 12 #70 [hci0] 59.187722
L2CAP: Disconnection Request (0x06) ident 4 len 4
Destination CID: 64
Source CID: 64
> ACL Data RX: Handle 256 flags 0x02 dlen 12 #73 [hci0] 59.192714
L2CAP: Disconnection Response (0x07) ident 4 len 4
Destination CID: 64
Source CID: 64
btmon after patch:
> ACL Data RX: Handle 256 flags 0x02 dlen 16 #248 [hci0] 103.502970
L2CAP: Connection Response (0x03) ident 5 len 8
Destination CID: 65
Source CID: 65
Result: Connection pending (0x0001)
Status: No further information available (0x0000)
> ACL Data RX: Handle 256 flags 0x02 dlen 16 #249 [hci0] 103.504184
L2CAP: Connection Response (0x03) ident 5 len 8
Destination CID: 65
Source CID: 65
Result: Connection successful (0x0000)
Status: No further information available (0x0000)
< ACL Data TX: Handle 256 flags 0x00 dlen 23 #250 [hci0] 103.504398
L2CAP: Configure Request (0x04) ident 6 len 15
Destination CID: 65
Flags: 0x0000
Option: Retransmission and Flow Control (0x04) [mandatory]
Mode: Basic (0x00)
TX window size: 0
Max transmit: 0
Retransmission timeout: 0
Monitor timeout: 0
Maximum PDU size: 0
> ACL Data RX: Handle 256 flags 0x02 dlen 16 #251 [hci0] 103.505472
L2CAP: Configure Request (0x04) ident 3 len 8
Destination CID: 65
Flags: 0x0000
Option: Maximum Transmission Unit (0x01) [mandatory]
MTU: 1480
< ACL Data TX: Handle 256 flags 0x00 dlen 18 #252 [hci0] 103.505689
L2CAP: Configure Response (0x05) ident 3 len 10
Source CID: 65
Flags: 0x0000
Result: Success (0x0000)
Option: Maximum Transmission Unit (0x01) [mandatory]
MTU: 1480
> ACL Data RX: Handle 256 flags 0x02 dlen 15 #254 [hci0] 103.509165
L2CAP: Configure Response (0x05) ident 6 len 7
Source CID: 65
Flags: 0x0000
Result: Failure - unknown options (0x0003)
04 .
< ACL Data TX: Handle 256 flags 0x00 dlen 12 #255 [hci0] 103.509426
L2CAP: Configure Request (0x04) ident 7 len 4
Destination CID: 65
Flags: 0x0000
< ACL Data TX: Handle 256 flags 0x00 dlen 12 #257 [hci0] 103.511870
L2CAP: Connection Request (0x02) ident 8 len 4
PSM: 1 (0x0001)
Source CID: 66
> ACL Data RX: Handle 256 flags 0x02 dlen 14 #259 [hci0] 103.514121
L2CAP: Configure Response (0x05) ident 7 len 6
Source CID: 65
Flags: 0x0000
Result: Success (0x0000)
Signed-off-by: Florian Dollinger <dollinger.florian@gmx.de>
Co-developed-by: Florian Dollinger <dollinger.florian@gmx.de>
Reviewed-by: Luiz Augusto Von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
jenkins-tessares
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
jenkins-tessares
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
jenkins-tessares
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
jenkins-tessares
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
jenkins-tessares
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
jenkins-tessares
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
jenkins-tessares
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
jenkins-tessares
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
jenkins-tessares
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
jenkins-tessares
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
jenkins-tessares
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
jenkins-tessares
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
jenkins-tessares
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Feb 23, 2021
Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
jenkins-tessares
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
jenkins-tessares
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Feb 23, 2021
Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c multipath-tcp#70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: multipath-tcp#157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c multipath-tcp#70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: multipath-tcp#157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c multipath-tcp#70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: multipath-tcp#157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c multipath-tcp#70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: multipath-tcp#157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c multipath-tcp#70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: multipath-tcp#157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c multipath-tcp#70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: multipath-tcp#157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
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Christoph Paasch reported following crash: dst_release underflow WARNING: CPU: 0 PID: 1319 at net/core/dst.c:175 dst_release+0xc1/0xd0 net/core/dst.c:175 CPU: 0 PID: 1319 Comm: syz-executor217 Not tainted 5.11.0-rc6af8e85128b4d0d24083c5cac646e891227052e0c #70 Call Trace: rt_cache_route+0x12e/0x140 net/ipv4/route.c:1503 rt_set_nexthop.constprop.0+0x1fc/0x590 net/ipv4/route.c:1612 __mkroute_output net/ipv4/route.c:2484 [inline] ... The worker leaves msk->subflow alone even when it happened to close the subflow ssk associated with it. Fixes: 866f26f ("mptcp: always graft subflow socket to parent") Closes: #157 Reported-by: Christoph Paasch <cpaasch@apple.com> Suggested-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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The srv_mutex is used during writeback so cifs should ensure that allocations done when that mutex is held are done with GFP_NOFS, to avoid having direct reclaim ending up waiting for the same mutex and causing a deadlock. This is detected by lockdep with the splat below: ====================================================== WARNING: possible circular locking dependency detected 5.18.0 #70 Not tainted ------------------------------------------------------ kswapd0/49 is trying to acquire lock: ffff8880195782e0 (&tcp_ses->srv_mutex){+.+.}-{3:3}, at: compound_send_recv but task is already holding lock: ffffffffa98e66c0 (fs_reclaim){+.+.}-{0:0}, at: balance_pgdat which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (fs_reclaim){+.+.}-{0:0}: fs_reclaim_acquire kmem_cache_alloc_trace __request_module crypto_alg_mod_lookup crypto_alloc_tfm_node crypto_alloc_shash cifs_alloc_hash smb311_crypto_shash_allocate smb311_update_preauth_hash compound_send_recv cifs_send_recv SMB2_negotiate smb2_negotiate cifs_negotiate_protocol cifs_get_smb_ses cifs_mount cifs_smb3_do_mount smb3_get_tree vfs_get_tree path_mount __x64_sys_mount do_syscall_64 entry_SYSCALL_64_after_hwframe -> #0 (&tcp_ses->srv_mutex){+.+.}-{3:3}: __lock_acquire lock_acquire __mutex_lock mutex_lock_nested compound_send_recv cifs_send_recv SMB2_write smb2_sync_write cifs_write cifs_writepage_locked cifs_writepage shrink_page_list shrink_lruvec shrink_node balance_pgdat kswapd kthread ret_from_fork other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(fs_reclaim); lock(&tcp_ses->srv_mutex); lock(fs_reclaim); lock(&tcp_ses->srv_mutex); *** DEADLOCK *** 1 lock held by kswapd0/49: #0: ffffffffa98e66c0 (fs_reclaim){+.+.}-{0:0}, at: balance_pgdat stack backtrace: CPU: 2 PID: 49 Comm: kswapd0 Not tainted 5.18.0 #70 Call Trace: <TASK> dump_stack_lvl dump_stack print_circular_bug.cold check_noncircular __lock_acquire lock_acquire __mutex_lock mutex_lock_nested compound_send_recv cifs_send_recv SMB2_write smb2_sync_write cifs_write cifs_writepage_locked cifs_writepage shrink_page_list shrink_lruvec shrink_node balance_pgdat kswapd kthread ret_from_fork </TASK> Fix this by using the memalloc_nofs_save/restore APIs around the places where the srv_mutex is held. Do this in a wrapper function for the lock/unlock of the srv_mutex, and rename the srv_mutex to avoid missing call sites in the conversion. Note that there is another lockdep warning involving internal crypto locks, which was masked by this problem and is visible after this fix, see the discussion in this thread: https://lore.kernel.org/all/20220523123755.GA13668@axis.com/ Link: https://lore.kernel.org/r/CANT5p=rqcYfYMVHirqvdnnca4Mo+JQSw5Qu12v=kPfpk5yhhmg@mail.gmail.com/ Reported-by: Shyam Prasad N <nspmangalore@gmail.com> Suggested-by: Lars Persson <larper@axis.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com> Reviewed-by: Enzo Matsumiya <ematsumiya@suse.de> Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com> Signed-off-by: Steve French <stfrench@microsoft.com>
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… when the system is sleeping Some channels may be masked. When the system is suspended, if these masked channels are not filtered out, this will lead to null pointer operations and system crash: Unable to handle kernel NULL pointer dereference at virtual address Mem abort info: ESR = 0x0000000096000004 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: level 0 translation fault Data abort info: ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=0000000894300000 [00000000000002a0] pgd=0000000000000000, p4d=0000000000000000 Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 989 Comm: sh Tainted: G B 6.6.0-16203-g557fb7a3ec4c-dirty #70 Hardware name: Freescale i.MX8QM MEK (DT) pstate: 400000c5 (nZcv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc: fsl_edma_disable_request+0x3c/0x78 lr: fsl_edma_disable_request+0x3c/0x78 sp:ffff800089ae7690 x29: ffff800089ae7690 x28: ffff000807ab5440 x27: ffff000807ab5830 x26: 0000000000000008 x25: 0000000000000278 x24: 0000000000000001 23: ffff000807ab4328 x22: 0000000000000000 x21: 0000000000000009 x20: ffff800082616940 x19: 0000000000000000 x18: 0000000000000000 x17: 3d3d3d3d3d3d3d3d x16: 3d3d3d3d3d3d3d3d x15: 3d3d3d3d3d3d3d3d x14: 3d3d3d3d3d3d3d3d x13: 3d3d3d3d3d3d3d3d x12: 1ffff00010d45724 x11: ffff700010d45724 x10: dfff800000000000 x9: dfff800000000000 x8: 00008fffef2ba8dc x7: 0000000000000001 x6: ffff800086a2b927 x5: ffff800086a2b920 x4: ffff700010d45725 x3: ffff8000800d5bbc x2 : 0000000000000000 x1 : ffff000800c1d880 x0 : 0000000000000001 Call trace: fsl_edma_disable_request+0x3c/0x78 fsl_edma_suspend_late+0x128/0x12c dpm_run_callback+0xd4/0x304 __device_suspend_late+0xd0/0x240 dpm_suspend_late+0x174/0x59c suspend_devices_and_enter+0x194/0xd00 pm_suspend+0x3c4/0x910 Fixes: 72f5801 ("dmaengine: fsl-edma: integrate v3 support") Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com> Link: https://lore.kernel.org/r/20231113225713.1892643-2-xiaolei.wang@windriver.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
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HEAD was:
4023d1d ("DO-NOT-MERGE: mptcp: enabled by default") (HEAD, tag: export/20200828T200052, mptcp_net-next/export) (3 days ago)
2a11f62 ("DO-NOT-MERGE: mptcp: use kmalloc on kasan build") (3 days ago)
91fdfac ("mptcp: only wake parent if subflow is writable") (3 days ago)
0822fdd ("mptcp: fix stale subflow->writeable caching") (3 days ago)
99d7d48 ("mptcp: adjust mptcp receive buffer limit if subflow has larger one") (3 days ago)
8b96b81 ("mptcp: free acked data before waiting for more memory") (3 days ago)
d07154d ("mptcp: simult flow self-tests") (3 days ago)
b7affd8 ("mptcp: allow picking different xmit subflows") (3 days ago)
f019b5a ("mptcp: allow creating non-backup subflows") (3 days ago)
da09d83 ("mptcp: move address attribute into mptcp_addr_info") (3 days ago)
8c48a2f ("mptcp: add OoO related mibs") (3 days ago)
65101ef ("mptcp: cleanup mptcp_subflow_discard_data()") (3 days ago)
8748fe9 ("mptcp: move ooo skbs into msk out of order queue.") (3 days ago)
1cf506e ("mptcp: introduce and use mptcp_try_coalesce()") (3 days ago)
75fc9cb ("mptcp: basic sndbuf autotuning") (3 days ago)
49c9759 ("mptcp: trigger msk processing even for OoO data") (3 days ago)
6204ca3 ("mptcp: set data_ready status bit in subflow_check_data_avail()") (3 days ago)
cb08e21 ("mptcp: rethink 'is writable' conditional") (3 days ago)
a70812a ("mptcp: add the incoming RM_ADDR support") (3 days ago)
67841c3 ("mptcp: add the outgoing RM_ADDR support") (3 days ago)
72076b2 ("mptcp: rename addr_signal and the related functions") (3 days ago)
2c3d5e7 ("selftests/mptcp: Better delay & reordering configuration") (3 days ago)
f73186c ("bpf: add 'bpf_mptcp_sock' structure and helper") (3 days ago)
1414dba ("mptcp: attach subflow socket to parent cgroup") (3 days ago)
ac22c61 ("bpf: expose is_mptcp flag to bpf_tcp_sock") (3 days ago)
50aba46 ("gtp: add notification mechanism") (mptcp_net-next/net-next) (4 days ago)
44771ea ("Merge branch 's390-qeth-next'") (4 days ago)
Syzkaller-repro:
[Update 8/31: New HEAD & reproducer]
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